Bug 1007176

Summary:	Add VPC and VHDX file formats as supported in qemu-kvm (read-only)
Product:	Red Hat Enterprise Linux 7	Reporter:	Sibiao Luo <sluo>
Component:	qemu-kvm	Assignee:	Jeff Cody <jcody>
Status:	CLOSED CURRENTRELEASE	QA Contact:	Virtualization Bugs <virt-bugs>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	7.0	CC:	acathrow, chayang, flang, jcody, juzhang, michen, ondrejv, qzhang, virt-maint, xfu
Target Milestone:	rc
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	qemu-kvm-1.5.3-15.el7	Doc Type:	Release Note
Doc Text:	VPC and VHDX File Formats KVM in Red Hat Enterprise Linux 7.0 Beta includes support for the Microsoft Virtual PC (VPC) and Microsoft Hyper-V virtual hard disk (VHDX) file formats.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2014-06-13 10:02:41 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	961854, 977441, 1006159

Description Sibiao Luo 2013-09-12 04:48:58 UTC

Description of problem:
fail to boot guest with vpc file format disk in qemu-kvm. we has fixed this issue in rhel6.5(bug 999779), so we need to backport the code to rhel7 also.

Version-Release number of selected component (if applicable):
host info:
# uname -r && rpm -q qemu-kvm
3.10.0-18.el7.x86_64
qemu-kvm-1.5.3-2.el7.x86_64
guest info:
3.10.0-18.el7.x86_64

How reproducible:
100%

Steps to Reproduce:
1.create a vpc file format disk.
# qemu-img create -f vpc sluo-data-disk.vpc 10G
Formatting 'sluo-data-disk.vpc', fmt=vpc size=10737418240 
# qemu-img info sluo-data-disk.vpc
image: sluo-data-disk.vpc
file format: vpc
virtual size: 10G (10737893376 bytes)
disk size: 24K
2.boot guest with vpc format file in KVM.
e.g:...-drive file=/home/sluo-data-disk.vpc,if=none,format=vpc,id=drive-data-disk,werror=stop,rerror=stop,*readonly=on* -device virtio-scsi-pci,bus=pci.0,addr=0x7,id=scsi0 -device scsi-hd,drive=drive-data-disk,id=data-disk,bus=scsi0.0

Actual results:
after step 2, qemu will quit with prompt that 'vpc' invalid format, like:
Warning: option deprecated, use lost_tick_policy property of kvm-pit instead.
qemu-kvm: -drive file=/home/sluo-data-disk.vpc,if=none,format=vpc,id=drive-data-disk,werror=stop,rerror=stop,readonly=on: 'vpc' invalid format
/etc/qemu-ifdown: could not launch network script

Expected results:
Qemu should support the vpc file format.

Additional info:
# /usr/libexec/qemu-kvm -drive format=?
Supported formats: vvfat vpc vmdk vhdx vdi sheepdog sheepdog sheepdog raw host_cdrom host_floppy host_device file qed qcow2 qcow parallels nbd nbd nbd iscsi gluster gluster gluster gluster dmg cow cloop bochs blkverify blkdebug

Comment 1 Jeff Cody 2013-09-13 19:25:57 UTC

vpc needs to be added to the rpm spec template drive r/o whitelist

Comment 2 Ademar Reis 2013-11-05 19:41:35 UTC

(In reply to Jeff Cody from comment #1)
> vpc needs to be added to the rpm spec template drive r/o whitelist

And so does VHDX (until read/write support is added)

Comment 3 Jeff Cody 2013-11-06 15:33:58 UTC

*** Bug 879234 has been marked as a duplicate of this bug. ***

Comment 4 Jeff Cody 2013-11-06 19:41:41 UTC

*** Bug 1006662 has been marked as a duplicate of this bug. ***

Comment 5 Miroslav Rezanina 2013-11-07 08:26:23 UTC

Fix included in qemu-kvm-1.5.3-15.el7

Comment 7 Sibiao Luo 2013-11-18 03:34:37 UTC

Verify this issue on qemu-kvm-1.5.3-19.el7.x86_64 that with VPC and VHDX format disk, it can boot up with vpc/vhdx format disk specified readonly=on, so this issue has been fixed correctly.

host info:
# uname -r && rpm -q qemu-kvm
3.10.0-41.el7.x86_64
qemu-kvm-1.5.3-19.el7.x86_64

Best regards,
sluo

Comment 8 Ludek Smid 2014-06-13 10:02:41 UTC

This request was resolved in Red Hat Enterprise Linux 7.0.

Contact your manager or support representative in case you have further questions about the request.